Infrared light has an obvious thermal effect, which can easily lead to an increase in the ambient temperature. Ordinary architectural glass has no heat insulation effect, which can only be achieved by means of film, coating, etc. Therefore, the surfaces of architectural glass, car film, outdoor facilities, etc. need to use heat insulation materials to achieve the effect of heat insulation and energy saving. Therefore, new environmentally friendly insulation materials have always been a research hotspot. These materials have very broad application prospects in the fields of green building energy saving and automotive glass insulation—nano-powders and functional film materials that have high visible light transmittance and can effectively absorb or reflect near-infrared light. Glass heat insulation coating is a kind of coating prepared by processing one or more nanometer powder materials. The nanomaterials used in them have special optical properties, that is, they have a high barrier rate in the infrared and ultraviolet regions. , has a high transmittance in the visible region. Utilizing the transparent heat insulation properties of this material, it is mixed with environment-friendly high-performance resin and processed by special processing technology to prepare energy-saving and environment-friendly heat insulation coating. Under the premise of not affecting the lighting of the glass, the effect of energy saving and cooling can be achieved in summer, and the effect of energy saving and heat preservation can be achieved in winter.
Nano-cesium tungsten oxide not only has strong absorption characteristics in the near-infrared region (wavelength of 800-1100nm), but also has strong transmission characteristics in the visible light region (wavelength of 380-780nm), and has strong transmission characteristics in the ultraviolet region (wavelength of 200- 380nm) also has strong shielding properties. It is an inorganic nano-powder with the best absorption capacity for near-infrared. It has a wide range of application prospects in automobiles and construction. Nano-cesium tungsten oxide can be said to be a transparent heat-insulating nano-powder.
Nano cesium tungsten oxide is dark blue powder, not really “transparent”. “Transparent” mainly means that the thermal insulation dispersion, thermal insulation film and thermal insulation coating prepared by cesium tungsten bronze all show high transparency of visible light. Cesium tungsten bronze nanoparticles have a high concentration of free carriers and have unique optical properties. They have high transmittance in the visible light region and strong shielding effect in the near-infrared region. That is to say, cesium-doped tungsten oxide materials, such as transparent heat-insulating coatings containing nano-cesium tungsten bronze, can ensure good visible light transmission (without affecting lighting), and can shield most of the heat brought by near-infrared light. The absorption coefficient α of a large number of free carriers in the nano cesium tungstate system is proportional to the square of the free carrier concentration and the wavelength of the absorbed light, so when the cesium content in CsxWO3 increases, the free carrier in the system As the concentration increases gradually, the absorption in the near-infrared region becomes more obvious. In other words, the NIR shielding performance of cesium tungsten bronze increases with its cesium content.
The cesium-doped tungsten oxide nanomaterial produced by CTIA GROUP LTD has been confirmed by the market as an inorganic nanomaterial with a good effect on near-infrared absorption, with uniform particle size and good dispersion. A new functional material with strong absorption in the near-infrared region and high transmittance in the visible region. CTIA GROUP LTD has long-term and stable production and supply of high-quality nano-tungsten oxide, including nano-yellow tungsten, nano-blue tungsten, nano-violet tungsten and nano-cesium oxide tungsten.
Cesium-doped tungsten oxide nanoparticles (CsxWO3) are excellent in shielding near-infrared light and transmitting visible light, so they can achieve high transparency and heat insulation without affecting your appreciation of the outside scenery. This new type of functional material with novel optical properties has broad application prospects in construction, automobiles and other vehicles. Glass heat insulation coating is a kind of coating prepared by processing one or more nanometer powder materials. The nanomaterials used in them have special optical properties, that is, they have a high barrier rate in the infrared and ultraviolet regions. , has a high transmittance in the visible region. Utilizing the transparent heat insulation properties of this material, it is mixed with environment-friendly high-performance resin and processed by special processing technology to prepare energy-saving and environment-friendly heat insulation coating. Under the premise of not affecting the lighting of the glass, the effect of energy saving and cooling can be achieved in summer, and the effect of energy saving and heat preservation can be achieved in winter.
Cesium-doped tungsten oxide nanoparticle Cs0.33WO3 thin film has good near-infrared shielding performance and is used as an infrared absorber. It is expected to replace the existing ITO conductive glass. As a window material, it can be used as a good near-infrared heat insulation material. The automotive and construction fields have very attractive application prospects.
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